chktri - check for trigraphs in C source code

NAME

       chktri - check for trigraphs in C source code

SYNOPSIS

       chktri [file ...]

DESCRIPTION

       This  program  looks  for  lines containing trigraphs in C source code.
       Trigraphs are a way to represent certain characters in C source code as
       two  question  marks  and  a third character.  For example, a backslash
       could be represented as ‘??/’.  For a detail specification, see section
       5.2.1.1 in the ISO 9899:1990 standard or any decent C book.  (You don’t
       really want to know.)

AUTHOR

       Lars Wirzenius, liw@iki.fi.